Ions

Grade 8 students have had difficulties in memorizing the symbols of mono-atomic ions and poly atomic ions. As a result a new helpful strategy was used for students to have fun while learning. The students of grade 8 now have new nicknames that they call each other with. The names and the symbols of the cations and anions were written on two differently colored cardboard respectively, each student chose the ion he has difficulty in memorize it and made it his nickname.  

Mixtures

In relation to the lesson about the different types of mixture, the grade six classes were transformed into a mini labs where some students prepared different kinds of mixtures and classified them as homogeneous or heterogeneous by filling in the report .In section A, each group of students brought their own materials and arranged solid- liquid and liquid-liquid mixtures.  While in section B some students demonstrated in front of the class how to differentiate between the various types of mixtures by mixing different substances, and accordingly deduce if each mixture is a homogeneous or heterogeneous. 

THE STOMATA : SITE OF GAS EXCHANGE.